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Cisco ONS 15600 Reference Manual, R7.2
Chapter 13 SNMP
13.8.1 Remote Monitoring
For security reasons, the SNMP proxy feature must be enabled at all receiving and transmitting NEs to
function. For instructions to do this, refer to the Cisco ONS 15600 Procedure Guide.
13.8.1 Remote Monitoring
The ONS 15600 incorporates RMON to allow network operators to monitor Ethernet facility
performance and events. Software R7.0 and later provide remote data communications channel (DCC)
monitoring using 64-bit RMON over the DCC to gather historical and statistical Ethernet data. In
general, ONS 15600 system RMON is based on the IETF-standard MIB RFC 2819 and includes the
following five groups from the standard MIB: Ethernet Statistics, History Control, Ethernet History,
Alarm, and Event.
13.8.2 64-Bit RMON Monitoring over DCC
The ONS 15600 DCC is implemented over the IP protocol, which is not compatible with Ethernet. The
system monitors Ethernet equipment history and statistics using RMON. RMON DCC monitoring (for
both IP and Ethernet) is also supported; it monitors the health of remote DCC connections.
RMON DCC contains two MIBs for DCC interfaces. They are:
•
cMediaIndependentTable—Standard, RFC 3273; the proprietary extension of the HC-RMON MIB
used for reporting statistics
•
cMediaIndependentHistoryTable—Proprietary MIB used to support history
13.8.2.1 Row Creation in MediaIndependentTable
The mediaIndependentTable is created automatically when the Ethernet facility is created on the
ONS 15600 ASAP card.
13.8.2.2 Row Creation in cMediaIndependentHistoryControlTable
SNMP row creation and deletion for the cMediaIndependentHistoryControlTable follows the same
processes as for the MediaIndependentTable; only the variables differ.
In order to create a row, the SetRequest PDU should contain the following:
•
cMediaIndependentHistoryControlDataSource and its desired value
•
cMediaIndependentHistoryControlOwner and its desired value
•
cMediaIndependentHistoryControlStatus with a value of createRequest (2)
13.8.3 HC-RMON-MIB Support
For the ONS 15600, the implementation of the high-capacity remote monitoring information base
(HC-RMON-MIB, or RFC 3273) enables 64-bit support of existing RMON tables. This support is
provided with the etherStatsHighCapacityTable and the etherHistoryHighCapacityTable. An additional
table, the mediaIndependentTable, and an additional object, hcRMONCapabilities, are also added for
this support. All of these elements are accessible by any third-party SNMP client having RFC 3273
support.